51单片机抢答器源程序

/********************************************** 程序名: 8路抢答器.c

作者: 风雪子郁

时间: 2012/8/22

邮箱：fxziyu@https://www.360docs.net/doc/a23917276.html,

地址：四川信息职业技术学院(雪峰校区)

**********************************************/ #include

#include

sbit sjjia=P1^0;

sbit sjjian=P1^1;

sbit kaishi=P1^2;

sbit fuwei=P1^3;

sbit soud=P1^4;

sbit led_r=P1^5;

sbit led_y=P1^6;

sbit led_ce=P3^3;

sbit key_ce=P3^4;

unsigned char num[]={'0','1','2','3','4','5','6','7','8','9'},num2; unsigned char model,time,temp;

void init() //初始化函数

{

TMOD=0x01;

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

ET0=1;

TR0=0;

EA=1;

P1=0x0f;

led_ce=1;

key_ce=1;

model=0;

time=30;

}

void delay(unsigned char i) //延时

{

unsigned char j,k;

while(i--)

for(j=100;j>0;j--)

for(k=100;k>0;k--);

}

void star() //启动

{

lcd_xml(0x80);lcd_xsj(" welcome ");

delay(100);

lcd_xml(0xc0);lcd_xsj("===>> ");

delay(30);

lcd_xml(0xc0);lcd_xsj("=======>> ");

delay(30);

lcd_xml(0xc0);lcd_xsj("=========>> ");

delay(30);

lcd_xml(0xc0);lcd_xsj("===========>> ");

delay(30);

lcd_xml(0xc0);lcd_xsj("==============>>");

delay(30);

lcd_xml(0xc0);lcd_xsj(" 8 Way Responder");

delay(80);

}

void led_num() //刷新倒计时

{

lcd_xml(0x80);lcd_xsj(" Countdown : ");

lcd_xml(0x8d);lcd_xsj2(num[time/10]);

lcd_xml(0x8e);lcd_xsj2(num[time%10]);

}

void reset() //复位

{

TR0=0;

P1=0x0f;

led_ce=1;

key_ce=1;

led_r=0;

led_y=0;

P2=0xff;

model=0;

time=30;

led_num();

lcd_xml(0xc0);lcd_xsj(" Not started ");

}

void Not_started()

{

if(sjjia==0)

{

delay(10);

if(sjjia==0)

{

time++;

if(time==100) time=0;

led_num();

}

}

if(sjjian==0)

{

delay(10);

if(sjjian==0)

{

time--;

if(time==0) time=99;

led_num();

}

}

if(kaishi==0)

{

delay(10);

if(kaishi==0)

{

model=1;

TR0=1;

lcd_xml(0xc0);lcd_xsj(" Start Responder");

soud=1;delay(10);soud=0;

}

}

}

void anjian()

{

led_ce=1;

key_ce=0;

if(P2 != 0xff)

{

delay(5);

if(P2 != 0xff)

{

temp=~P2;

model=3;

led_r=1;

soud=1;delay(10);soud=0;

switch(temp)

{

case 0x01:num2=1;break;

case 0x02:num2=2;break;

case 0x04:num2=3;break;

case 0x08:num2=4;break;

case 0x10:num2=5;break;

case 0x20:num2=6;break;

case 0x40:num2=7;break;

case 0x80:num2=8;break;

}

lcd_xml(0xc0);lcd_xsj(" Competitor: ");

lcd_xml(0xce);lcd_xsj2(num[num2]);

led_ce=0;

key_ce=1;

time=60;

P2=temp;

}

}

}

void finish()

{

if(!time)

{

led_y=1;

lcd_xml(0xc0);lcd_xsj(" End ");

}

}

void main()

{

init();

lcd_init();

star();

reset();

while(1)

{

if(fuwei==0) //复位键检测

{

delay(1);

if(fuwei==0)

reset();

}

switch(model)

{

case 0:Not_started();break;

case 1:anjian();break;

case 2:finish();break;

case 3:break;

default : model=0;break;

}

}

}

void timee() interrupt 1 //1s函数中断

{

unsigned char a;

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

a++; //是否满1s

if(a==24)

{

a=0;

if(model==1 || model==3)

{

time--;

led_num();

if(time==0)

{

model=2;

soud=1;delay(20);soud=0;

}

}

}

}

/********************************************** 程序名: lcd1602.h

作者: 风雪子郁

时间: 2012/8/22

邮箱：fxziyu@https://www.360docs.net/doc/a23917276.html,

地址：四川信息职业技术学院(雪峰校区)

*************说明*************

适用晶振：12MHZ

占用变量名：lcd_db,lcd_rs,lcd_rw,lcd_e;

占用函数名：lcd_delay(),lcd_xsj(),lcd_xsj2(),lcd_xml(),lcd_init();

调用：

lcd_init() : 主函数中调用初始化

lcd_xsj("xie shu ju chuan") ：写数据串

lcd_xsj2('a') : 写单个数据字符

lcd_xml(0x01) : 写操作命令

**********************************************/

//定义端口

#define lcd_db P0 //数据口DB0～DB7定义

sbit lcd_rs=P3^2;

sbit lcd_rw=P3^1;

sbit lcd_e=P3^0;

//延时函数

void lcd_delay()

{

unsigned char i;

for(i=0;i<100;i++);

}

//写数据串函数

void lcd_xsj(unsigned char dat[])

{

unsigned char a;

for(a=0;a<16;a++)

{

lcd_rs=1;

lcd_rw=0;

lcd_db=dat[a];

lcd_e=0;lcd_delay();

lcd_e=1;lcd_delay();

lcd_e=0;lcd_delay();

}

}

//写数据函数

void lcd_xsj2(unsigned char dat)

{

lcd_rs=1;

lcd_rw=0;

lcd_db=dat;

lcd_e=0;lcd_delay();

lcd_e=1;lcd_delay();

lcd_e=0;lcd_delay();

}

//写命令函数

void lcd_xml(unsigned char ml) {

lcd_rs=0;

lcd_rw=0;

lcd_db=ml;

lcd_e=0;lcd_delay();

lcd_e=1;lcd_delay();

lcd_e=0;lcd_delay();

}

//初始化函数

void lcd_init()

{

lcd_xml(0x38);

lcd_xml(0x0c);

lcd_xml(0x01);

lcd_xml(0x06);

}

sjjia fuwei

sjjian kaishi fuwei fengming s j j i a

s j j i a n kaishi

fengming

key_b7

P20P21P22P23P24P25P26P27

led_b0led_b1led_b2led_b3led_b4led_b5led_b6led_b7

led_b7

key_b3

led_b3

l e d _b 4

k e y _b 4

l e d _b 5

k e y _b 5

l e d _b 6

k e y _b 6

l e d _b 1

k e y _b 1

l e d _b 2

k e y _b 2

d7d6d5d4d3d2d1d0d 0d 1d 2d 3d 4d 5d 6d 7d 7P20P21P22P23P24P25P26P27led_ce d 6d 5d 4d 3d 2d 1d 0l e d _r

l e d _y

l e d _b 0

k e y _b 0

led_r led_y lcd_e lcd_rw lcd_rs l c d _e l c d _r w l c d _r s led_ce key_ce KEY_B0P27P26P25P24P23P22P21P20KEY_B1KEY_B2KEY_B3KEY_B4KEY_B5KEY_B6KEY_B7KEY_CE KEY_CE LED_CE

XTAL2

18

XTAL1

19

ALE 30EA

31

PSEN 29RST

9

P0.0/AD0

39P0.1/AD138P0.2/AD237P0.3/AD336P0.4/AD435P0.5/AD534P0.6/AD633P0.7/AD732P1.01P1.12P1.23P1.34P1.45P1.56P1.67

P1.78

P3.0/RXD 10P3.1/TXD 11P3.2/INT012P3.3/INT113P3.4/T014P3.7/RD

17

P3.6/WR 16P3.5/T115P2.7/A1528P2.0/A821P2.1/A922P2.2/A1023P2.3/A1124P2.4/A1225P2.5/A1326P2.6/A1427U1

AT89C51

D 7

14

D 613D 512D 411D 310D 29D 18D 07E

6R W 5R S 4V S S 1V D D 2V E E

3

LCD1

LM016L

BUZ1

BUZZER

R10

1k

Q1

NPN

K1K2K3

K4

时间加

时间减

开始

复位

134

5768

2D1D2

D3

D4

D5D6

D7

D8

2

34567

89

1

RP3

RESPACK-8

X1

CRYSTAL

C130pF

C2

30pF R1

500

C3

22u

A02B018A13B117A24B216A35B315A46B414A57B513A68B612A7

9

B7

11CE

19

AB/BA

1

U2

74LS245

D10

LED-YELLOW

D9

LED-RED

R2

10k

R3

10k

A02B0

18A13B117A24B216A35B315A46B414A57B513A68B612A79B7

11

CE 19AB/BA

1

U4

74LS245

l e d _r